181413443 has 8 divisors (see below), whose sum is σ = 200436768. Its totient is φ = 163318144.

The previous prime is 181413439. The next prime is 181413461. The reversal of 181413443 is 344314181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 181413443 - 2² = 181413439 is a prime.

It is a super-2 number, since 2×181413443² = 65821674602228498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181413403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231596 + ... + 232377.

It is an arithmetic number, because the mean of its divisors is an integer number (25054596).

Almost surely, 2^181413443 is an apocalyptic number.

181413443 is a deficient number, since it is larger than the sum of its proper divisors (19023325).

181413443 is a wasteful number, since it uses less digits than its factorization.

181413443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464013.

The product of its digits is 4608, while the sum is 29.

The square root of 181413443 is about 13468.9807706448. The cubic root of 181413443 is about 566.0956555233.

The spelling of 181413443 in words is "one hundred eighty-one million, four hundred thirteen thousand, four hundred forty-three".